LG G3 Stylus Dual Guide De L'utilisateur page 347

If you have not created a Google account on the phone or you forgot Backup PIN, you
have to perform a hard reset.
< If you have forgotten your PIN or Password >
If you forget your PIN or Password, you will need to perform a hard reset.
Caution: If you perform a hard reset, all user applications and user data will be
deleted.
NOTE: If you have not logged into your Google Account and have forgotten
your Unlock Pattern, you will need to enter your Backup PIN.
5. Using the Hard Reset (Factory Reset)
If your phone does not restore to its original condition, use a Hard Reset (Factory Reset)
to initialize it.
1
Turn the power off.
2 Press and hold the Power/Lock key + Volume Down key on the back of the
phone.
3 Release the Power/Lock Key only when the LG logo is displayed, then immediately
press and hold the Power/Lock Key again.
4 Release all keys when the Factory hard reset screen is displayed.
5 Select Yes using Volume Up/Down Key and press the Power/Lock Key to
continue, or select No (Exit) using Volume Up/Down Key and press the Power/
Lock Key to cancel.
WARNING
If you perform a Hard Reset, all user applications, user data and DRM licenses
will be deleted. Please remember to backup any important data before
performing a Hard Reset.
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